diff --git a/include/boost/type_traits/detail/composite_member_pointer_type.hpp b/include/boost/type_traits/detail/composite_member_pointer_type.hpp
index ecb4b68..a747ee4 100644
--- a/include/boost/type_traits/detail/composite_member_pointer_type.hpp
+++ b/include/boost/type_traits/detail/composite_member_pointer_type.hpp
@@ -84,6 +84,14 @@ template<class C1, class C2> struct common_member_class
     >::type type;
 };
 
+//This indirection avoids compilation errors on some older 
+//compilers like MSVC 7.1
+template<class CT, class CB>
+struct common_member_class_pointer_to_member
+{
+    typedef CT CB::* type;
+};
+
 template<class C1, class T1, class C2, class T2> struct composite_member_pointer_type<T1 C1::*, T2 C2::*>
 {
 private:
@@ -95,7 +103,7 @@ private:
 
 public:
 
-    typedef CT CB::* type;
+    typedef typename common_member_class_pointer_to_member<CT, CB>::type type;
 };
 
 } // namespace type_traits_detail
diff --git a/include/boost/type_traits/detail/composite_pointer_type.hpp b/include/boost/type_traits/detail/composite_pointer_type.hpp
index c807954..ae21e18 100644
--- a/include/boost/type_traits/detail/composite_pointer_type.hpp
+++ b/include/boost/type_traits/detail/composite_pointer_type.hpp
@@ -124,17 +124,26 @@ public:
     typedef typename boost::copy_cv<typename boost::copy_cv<typename composite_pointer_type<T2, U2>::type const, T>::type, U>::type type;
 };
 
+//Old compilers like MSVC-7.1 have problems using boost::conditional in
+//composite_pointer_type. Partially specializing on has_common_pointee<T, U>::value
+//seems to make their life easier
+template<class T, class U, bool = has_common_pointee<T, U>::value >
+struct composite_pointer_type_dispatch
+   : common_pointee<T, U>
+{};
+
+template<class T, class U>
+struct composite_pointer_type_dispatch<T, U, false>
+   : composite_pointer_impl<T, U>
+{};
+
+
 } // detail
 
+
 template<class T, class U> struct composite_pointer_type<T*, U*>
 {
-    typedef typename boost::conditional<
-
-        detail::has_common_pointee<T, U>::value,
-        detail::common_pointee<T, U>,
-        detail::composite_pointer_impl<T, U>
-
-    >::type::type * type;
+    typedef typename detail::composite_pointer_type_dispatch<T, U>::type* type;
 };
 
 } // namespace type_traits_detail
diff --git a/include/boost/type_traits/detail/has_binary_operator.hpp b/include/boost/type_traits/detail/has_binary_operator.hpp
index 7bc783a..039a6bb 100644
--- a/include/boost/type_traits/detail/has_binary_operator.hpp
+++ b/include/boost/type_traits/detail/has_binary_operator.hpp
@@ -37,7 +37,10 @@
 #   pragma GCC system_header
 #elif defined(BOOST_MSVC)
 #   pragma warning ( push )
-#   pragma warning ( disable : 4018 4244 4547 4800 4804 4805 4913 6334)
+#   pragma warning ( disable : 4018 4244 4547 4800 4804 4805 4913)
+#   if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000)
+#       pragma warning ( disable : 6334)
+#   endif
 #endif
 
 namespace boost {
diff --git a/include/boost/type_traits/detail/has_postfix_operator.hpp b/include/boost/type_traits/detail/has_postfix_operator.hpp
index 2a6c706..3e686f1 100644
--- a/include/boost/type_traits/detail/has_postfix_operator.hpp
+++ b/include/boost/type_traits/detail/has_postfix_operator.hpp
@@ -23,7 +23,10 @@
 #   pragma GCC system_header
 #elif defined(BOOST_MSVC)
 #   pragma warning ( push )
-#   pragma warning ( disable : 4244 4913 6334)
+#   pragma warning ( disable : 4244 4913)
+#   if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000)
+#       pragma warning ( disable : 6334)
+#   endif
 #endif
 
 namespace boost {
diff --git a/include/boost/type_traits/detail/has_prefix_operator.hpp b/include/boost/type_traits/detail/has_prefix_operator.hpp
index 72279e7..d4574fc 100644
--- a/include/boost/type_traits/detail/has_prefix_operator.hpp
+++ b/include/boost/type_traits/detail/has_prefix_operator.hpp
@@ -31,9 +31,14 @@
 #   pragma GCC system_header
 #elif defined(BOOST_MSVC)
 #   pragma warning ( push )
-#   pragma warning ( disable : 4146 4804 4913 4244 6334)
+#   pragma warning ( disable : 4146 4804 4913 4244)
+#   if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000)
+#       pragma warning ( disable : 6334)
+#   endif
 #endif
 
+
+
 namespace boost {
 namespace detail {
 
diff --git a/include/boost/type_traits/is_convertible.hpp b/include/boost/type_traits/is_convertible.hpp
index bc11a59..417ece2 100644
--- a/include/boost/type_traits/is_convertible.hpp
+++ b/include/boost/type_traits/is_convertible.hpp
@@ -300,13 +300,26 @@ struct is_convertible_basic_impl:
 // This version seems to work pretty well for a wide spectrum of compilers,
 // however it does rely on undefined behaviour by passing UDT's through (...).
 //
+
+//Workaround for old compilers like MSVC 7.1 to avoid
+//forming a reference to an array of unknown bound
+template <typename From>
+struct is_convertible_basic_impl_add_lvalue_reference
+   : add_lvalue_reference<From>
+{};
+
+template <typename From>
+struct is_convertible_basic_impl_add_lvalue_reference<From[]>
+{
+    typedef From type [];
+};
+
 template <typename From, typename To>
 struct is_convertible_basic_impl
 {
     static ::boost::type_traits::no_type BOOST_TT_DECL _m_check(...);
     static ::boost::type_traits::yes_type BOOST_TT_DECL _m_check(To);
-    typedef typename add_lvalue_reference<From>::type lvalue_type;
-    typedef typename add_rvalue_reference<From>::type rvalue_type; 
+    typedef typename is_convertible_basic_impl_add_lvalue_reference<From>::type lvalue_type;
     static lvalue_type _m_from;
 #ifdef BOOST_MSVC
 #pragma warning(push)
@@ -316,6 +329,7 @@ struct is_convertible_basic_impl
 #endif
 #endif
 #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+    typedef typename add_rvalue_reference<From>::type rvalue_type; 
     BOOST_STATIC_CONSTANT(bool, value =
         sizeof( _m_check(static_cast<rvalue_type>(_m_from)) ) == sizeof(::boost::type_traits::yes_type)
         );
diff --git a/include/boost/type_traits/is_floating_point.hpp b/include/boost/type_traits/is_floating_point.hpp
old mode 100755
new mode 100644
diff --git a/include/boost/type_traits/is_member_object_pointer.hpp b/include/boost/type_traits/is_member_object_pointer.hpp
old mode 100755
new mode 100644
diff --git a/include/boost/type_traits/is_signed.hpp b/include/boost/type_traits/is_signed.hpp
index 48facd3..70ca2e4 100644
--- a/include/boost/type_traits/is_signed.hpp
+++ b/include/boost/type_traits/is_signed.hpp
@@ -19,7 +19,9 @@ namespace boost {
 
 #if !defined( __CODEGEARC__ )
 
-#if !(defined(__EDG_VERSION__) && __EDG_VERSION__ <= 238) && !defined(BOOST_NO_INCLASS_MEMBER_INITIALIZATION)
+#if !(defined(BOOST_MSVC) && BOOST_MSVC <= 1310) && \
+    !(defined(__EDG_VERSION__) && __EDG_VERSION__ <= 238) &&\
+    !defined(BOOST_NO_INCLASS_MEMBER_INITIALIZATION)
 
 namespace detail{
 
diff --git a/include/boost/type_traits/is_unsigned.hpp b/include/boost/type_traits/is_unsigned.hpp
index 309f3ed..c4c54af 100644
--- a/include/boost/type_traits/is_unsigned.hpp
+++ b/include/boost/type_traits/is_unsigned.hpp
@@ -20,7 +20,9 @@ namespace boost {
 
 #if !defined( __CODEGEARC__ )
 
-#if !(defined(__EDG_VERSION__) && __EDG_VERSION__ <= 238) && !defined(BOOST_NO_INCLASS_MEMBER_INITIALIZATION)
+#if !(defined(BOOST_MSVC) && BOOST_MSVC <= 1310) &&\
+    !(defined(__EDG_VERSION__) && __EDG_VERSION__ <= 238) &&\
+    !defined(BOOST_NO_INCLASS_MEMBER_INITIALIZATION)
 
 namespace detail{
 
diff --git a/test/is_member_obj_test.cpp b/test/is_member_obj_test.cpp
old mode 100755
new mode 100644